Michael, thank you for response once again. Your answer is more than sufficient. I see your 2 x 75,000 Btu/NG at 10wc is theoreticaly same like my MR100 (150,00 LPB/Btu) at 5psi.Thanks and if I will have some more questions let me contact through PM (not to make you mess/off topic here) ... and these last carbon trap beautiful indeed!andrzejbtw- you remind me "where is my Olsen?":)

Very interesting package in the mail today! Finally I have a proper full size chawan (my old one is a $10 ippuku-wan) and I'm very excited to try it out.Sorry for the bad picture quality, my mobile phone is not so smart about where to focus

Here is my new teacup from Michael. It's really different. The glaze is absolutely wonderful! It is textured and really gorgeous. I own several 1,200 year old teacups and they look like they are siblings. I love this cup so much. Thank you Michael! It is a real work of art!